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Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

1996

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Articles 17911 - 17940 of 24087

Full-Text Articles in Social and Behavioral Sciences

The Effect Of Substrate-Enriched And Substrate-Impoverished Housing Environments On The Diversity Of Behaviour In Pigs, Marie Haskell, Françoise Wemelsfelder, Michael T. Mendl, Sheena Calvert, Alistair B. Lawrence Jan 1996

The Effect Of Substrate-Enriched And Substrate-Impoverished Housing Environments On The Diversity Of Behaviour In Pigs, Marie Haskell, Françoise Wemelsfelder, Michael T. Mendl, Sheena Calvert, Alistair B. Lawrence

Sentience Collection

In intensive farming situations, growing animals are housed in relatively barren environments. The lack of opportunity to perform substrate-interactive and manipulative behaviour patterns may affect the expression and organization of these behaviours. However, making direct comparisons of the behaviour expressed in environments of differing physical complexity is difficult. In this experiment a relative diversity index was used to compare the behavioural repertoires of pigs housed in two different environments for a period of five months. One group of pigs (substrate-enriched) had straw, forest bark and branches added to the standard pens and the other group (substrate-impoverished) did not. The pigs …


Quantity-Based Interference And Symbolic Representations In Chimpanzees (Pan Troglodytes), S. T. Boysen, G. G. Berntson, M. B. Hannan, J. T. Cacioppo Jan 1996

Quantity-Based Interference And Symbolic Representations In Chimpanzees (Pan Troglodytes), S. T. Boysen, G. G. Berntson, M. B. Hannan, J. T. Cacioppo

Sentience Collection

Five chimpanzees with training in counting and numerical skills selected between 2 arrays of different amounts of candy or 2 Arabic numerals. A reversed reinforcement contingency was in effect, in which the selected array was removed and the subject received the nonselected candies (or the number of candies represented by the nonselected Arabic numeral). Animals were unable to maximize reward by selecting the smaller array when candies were used as array elements. When Arabic numerals were substituted for the candy arrays, all animals showed an immediate shift to a more optimal response strategy of selecting the smaller numeral, thereby receiving …


Mechanisms Of American English Vowel Production In A Grey Parrot (Psittacus Erithacus), Denice K. Warren, Dianne K. Patterson, Irene M. Pepperberg Jan 1996

Mechanisms Of American English Vowel Production In A Grey Parrot (Psittacus Erithacus), Denice K. Warren, Dianne K. Patterson, Irene M. Pepperberg

Sentience Collection

Parrots are known for their capacity to reproduce the sounds of human speech, but few studies have investigated their mechanisms for producing such vocalizations. Using three methods of noninvasive video imaging (Super VHS video, infrared, X-ray radiography), we examined correlations between several elements of a Grey Parrot's (Psittacus erithacus) vocal-tract configuration and the bird's production of two vowels, /i/ ("eat") and /a/ ("rock"). This parrot uses mechanisms that both resemble and differ from those used by: (a) humans to produce English speech; and (b) some avian species to produce conspecific vocalizations. This Grey Parrot, for example, uses its vocal apparatus …


Gender Differences In Attitudes Toward Animal Research, Jennifer J. Eldridge, John P. Gluck Jan 1996

Gender Differences In Attitudes Toward Animal Research, Jennifer J. Eldridge, John P. Gluck

Experimentation Collection

Although gender differences in attitudes toward animal research have been reported in the literature for some time, exploration into the nature of these differences has received less attention. This article examines gender differences in responses to a survey of attitudes toward the use of animals in research. The survey was completed by college students and consisted of items intended to tap different issues related to the animal research debate. Results indicated that women were more likely than men to support tenets of the animal protection movement. Likewise, women were more likely than men to favor increased restrictions on animal use …


Taking Evolution Seriously: A Matter Of Primate Intelligence, Maxine Sheets-Johnstone Jan 1996

Taking Evolution Seriously: A Matter Of Primate Intelligence, Maxine Sheets-Johnstone

Intelligence Collection

No abstract provided.


Hyperactivism: The Phenomenon Of Doing Without Achieving, Henry Spira Jan 1996

Hyperactivism: The Phenomenon Of Doing Without Achieving, Henry Spira

Commentaries and Editorials

No abstract provided.


Less Meat, Less Misery: Reforming Factory Farms, Henry Spira Jan 1996

Less Meat, Less Misery: Reforming Factory Farms, Henry Spira

Farm Animal Campaign

No abstract provided.


Pvn-Cat-043-B-029-001-Mano, Benjamin Carter Jan 1996

Pvn-Cat-043-B-029-001-Mano, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-K-037-001-Mano, Benjamin Carter Jan 1996

Pvn-Cat-043-K-037-001-Mano, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-K-050-001-Mano, Unknown Unknown Jan 1996

Pvn-Cat-043-K-050-001-Mano, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-046-004-Mte, Benjamin Carter Jan 1996

Pvn-Cat-043-A-046-004-Mte, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-036-001-Mte, Unknown Unknown Jan 1996

Pvn-Cat-043-A-036-001-Mte, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-042-001-Mte, Unknown Unknown Jan 1996

Pvn-Cat-043-A-042-001-Mte, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-C-019-001-Mte, Unknown Unknown Jan 1996

Pvn-Cat-043-C-019-001-Mte, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-D-029-002-Mano, Unknown Unknown Jan 1996

Pvn-Cat-043-D-029-002-Mano, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-K-082-001-Mano, Benjamin Carter Jan 1996

Pvn-Cat-043-K-082-001-Mano, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-C-012-006-Mte, Unknown Unknown Jan 1996

Pvn-Cat-043-C-012-006-Mte, Unknown Unknown

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-C-021-004-Mte, Benjamin Carter Jan 1996

Pvn-Cat-043-C-021-004-Mte, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-013-001-Mte, Benjamin Carter Jan 1996

Pvn-Cat-043-A-013-001-Mte, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-B-042-010-Mte, Edward Mark Schortman Jan 1996

Pvn-Cat-043-B-042-010-Mte, Edward Mark Schortman

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-B-003-005-Mano, Benjamin Carter Jan 1996

Pvn-Cat-043-B-003-005-Mano, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-K-034-001-Mano, Benjamin Carter Jan 1996

Pvn-Cat-043-K-034-001-Mano, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-F-016-002-Lcth, Marne Ausec Jan 1996

Pvn-Cat-043-F-016-002-Lcth, Marne Ausec

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-C-022-002-Lcth, Marne Ausec Jan 1996

Pvn-Cat-043-C-022-002-Lcth, Marne Ausec

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-014-004a-Lcth, Benjamin Carter Jan 1996

Pvn-Cat-043-A-014-004a-Lcth, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-A-011-007-Lcth, Patricia Urban Jan 1996

Pvn-Cat-043-A-011-007-Lcth, Patricia Urban

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-M-030-003-Lcsh, Bryan Robbins Jan 1996

Pvn-Cat-043-M-030-003-Lcsh, Bryan Robbins

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-B-039-002-Plcn, Benjamin Carter Jan 1996

Pvn-Cat-043-B-039-002-Plcn, Benjamin Carter

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-B-018-003-Plcn, Marne Ausec Jan 1996

Pvn-Cat-043-B-018-003-Plcn, Marne Ausec

Four Valleys Archive

No abstract provided.


Pvn-Cat-043-B-016-002-Plcn, Marne Ausec Jan 1996

Pvn-Cat-043-B-016-002-Plcn, Marne Ausec

Four Valleys Archive

No abstract provided.